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https://www.readbyqxmd.com/read/28231435/impact-of-a-competition-with-two-consecutive-matches-in-a-day-on-physical-performance-in-young-tennis-players
#1
Cesar Gallo-Salazar, Juan Del Coso, David Barbado, Alejandro Lopez-Valenciano, Francisco Javier Santos-Rosa, David Sanz-Rivas, Manuel Moya, Jaime Fernandez-Fernandez
The purpose of this study was to analyze the effects of playing two tennis matches on the same day on physical performance in young tennis players. Twelve well-trained young tennis players took part in a simulated tennis competition consisting of two tennis matches on the same day (morning and afternoon sessions). Before and the day after the competition, physical performance was measured using a battery of countermovement jumps (CMJ), a 10-m sprint, the 5-0-5 agility test, hip, grip and shoulder maximal isometric strength, shoulder range of motion (ROM) and a serve velocity test...
February 23, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28231034/upscaling-of-hips-cell-derived-neurons-for-high-throughput-screening
#2
Stefanie Traub, Heiko Stahl, Holger Rosenbrock, Eric Simon, Ralf Heilker
The advent of human-induced pluripotent stem (hiPS) cell-derived neurons promised to provide better model cells for drug discovery in the context of the central nervous system. This work demonstrates both the upscaling of cellular expansion and the acceleration of neuronal differentiation to accommodate the immense material needs of a high-throughput screening (HTS) approach. Using GRowth factor-driven expansion and INhibition of NotCH (GRINCH) during maturation, the derived cells are here referred to as GRINCH neurons...
March 2017: SLAS Discov
https://www.readbyqxmd.com/read/28230611/values-for-bony-acetabular-roof-angle-and-percentage-femoral-head-cover-in-a-selective-ultrasound-neonatal-hip-screening-programme-effect-of-age-sex-and-side
#3
A Graham Wilkinson, Sally Wilkinson, Robert A Elton
Published maturation curves for bony acetabular roof or α angle (AA) and percentage femoral head cover (FHC) with age are sparse. We aimed to determine typical values for AA and FHC in 2236 infants referred to a selective ultrasound screening programme. There was increase in the values of first measurement of AA and FHC related to the logarithm of age. Males had greater values than females (P<0.001) and right hips had greater values than left (P<0.001) for both measurements. Significant side differences have not been reported previously...
February 22, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28229980/acupuncture-improves-intestinal-absorption-of-iron-in-iron-deficient-obese-patients-a-randomized-controlled-preliminary-trial
#4
Xin-Cai Xie, Yan-Qiang Cao, Qian Gao, Chen Wang, Man Li, Shou-Gang Wei
BACKGROUND: Obesity has an adverse effect on iron status. Hepcidin-mediated inhibition of iron absorption in the duodenum is a potential mechanism. Iron-deficient obese patients have diminished response to oral iron therapy. This study was designed to assess whether acupuncture could promote the efficacy of oral iron supplementation for the treatment of obesity-related iron deficiency (ID). METHODS: Sixty ID or ID anemia (IDA) patients with obesity were screened at Beijing Hospital of Traditional Chinese Medicine and were randomly allocated to receive either oral iron replacement allied with acupuncture weight loss treatment (acupuncture group, n = 30) or oral iron combined with sham-acupuncture treatment (control group, n = 30)...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28229485/osteoporosis-related-health-services-utilization-following-first-hip-fracture-among-a-cohort-of-privately-insured-women-in-the-united-states-2008-2014-an-observational-study
#5
Catherine W Gillespie, Pamela E Morin
Timely identification and treatment of osteoporosis following hip fracture is recommended to mitigate future fracture risk, yet prior work has demonstrated a disconnect between evidence-based recommendations and real-world implementation. We sought to describe contemporary patterns of osteoporosis screening and initiation of pharmacotherapy following hip fracture based on medical and pharmacy claims in the OptumLabs™ Data Warehouse. From a national sample, we identified 8349 women aged 50+ years enrolled in private commercial or Medicare Advantage plans with no prior history of osteoporosis diagnosis, osteoporosis pharmacotherapy, or hip fracture who experienced a hip fracture between 2008 and 2013...
February 23, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28229355/femoral-shaft-osteotomy-for-obligate-outward-rotation-due-to-scfe
#6
Peter M Stevens, Lucas Anderson, Bruce A MacWilliams
Slipped capital femoral epiphysis (SCFE) is an adolescent disease that leads to retroversion of the femoral neck and shaft, relative to the head. Observing that patients with SCFE must walk with an outward foot progression angle and externally rotate the leg in order to flex the hip, we have been performing a femoral shaft rotational osteotomy wherein we rotate the lower femur 45° inward, relative to the upper femur. By correcting retroversion, our goal is to improve functional hip and knee motion, thereby mitigating the effects of SCFE impingement...
February 22, 2017: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/28228904/bone-scan-findings-in-calcific-tendinitis-at-the-gluteus-maximus-insertion-some-illustrative-cases
#7
Karel Van Damme, Liesbeth De Coster, Koen Mermuys, Anja Van den Eeckhaut, Natascha Walgraeve, Frank De Geeter
We describe the bone scan and single-photon emission computed tomography/computed tomography findings in calcific tendinitis of the gluteus maximus and discuss its pathophysiology. Although this tendinopathy is mostly self-limiting, awareness of this disease is important for 2 reasons. First, it may explain acute hip symptoms in patients in the resorptive phase of the calcifications. Second, it should be considered as a differential diagnosis for bone scan hot spots in the vicinity of the gluteus maximus tendon and for cortical erosion seen in that region on X-rays or CT...
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28228790/successful-neridronate-therapy-in-pregnancy-associated-osteoporosis
#8
Agostino Gaudio, Carmelo Erio Fiore
Pregnancy-associated osteoporosis is a rare condition. The pathogenesis is probably multifactorial but has not yet been completely clarified. In this case report, a 38-year-old woman was referred to hospital after suffering an acute, non-traumatic back pain one month after delivering her first child. The radiological examination revealed four vertebral fractures. Bone mineral density was reduced, particularly at spine level. Biochemical tests were within normal range, except for increased urinary deoxypyridinoline and a slight reduction of the serum 25-OH vitamin D level...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28228787/fix-and-replace-an-emerging-paradigm-for-treating-acetabular-fractures
#9
Colin G Murphy, Andrew D Carrothers
Although technically challenging even for the experienced surgeon, simultaneous open reduction and internal fixation (ORIF) of acetabular fracture and total hip replacement (THR) have some potential advantages over the more traditional treatment options in specific patient subgroups; theoretically allowing immediate weight bearing and faster rehabilitation, reducing the cost of inpatient stay, and reducing the risks of early and late local complications associated with standard treatment for this type of injury...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28228786/hydroxyapatite-in-total-hip-arthroplasty-our-experience-with-a-plasma-spray-porous-titanium-alloy-hydroxyapatite-double-coated-cementless-stem
#10
Iacopo Castellini, Lorenzo Andreani, Paolo Domenico Parchi, Enrico Bonicoli, Nicola Piolanti, Francesca Risoli, Michele Lisanti
PURPOSE: Total hip arthroplasty could fail due to many factors and one of the most common is the aseptic loosening. In order to achieve an effective osseointegration and reduce risk of lossening, the use of cemented implant, contact porous bearing surface and organic coating were developed. Aim of this study was to evaluate clinical and radiological mid-term outcomes of a porous titanium alloy/hydroxyapatite double coating manufactured cementless femoral stem applied with "plasma spray" technique and to demonstrate the possibility to use this stem in different types of femoral canals...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28228781/denosumab-is-really-effective-in-the-treatment-of-osteoporosis-secondary-to-hypogonadism-in-prostate-carcinoma-patients-a-prospective-randomized-multicenter-international-study
#11
Carlo Doria, Paolo Tranquilli Leali, Federico Solla, Gianluca Maestretti, Massimo Balsano, Robero Mario Scarpa
INTRODUCTION: Osteoporosis is a complication of androgen deprivation therapy (ADT) in men with prostate carcinoma. The best defense against osteoporosis in prostate cancer is to identify patients with a high risk for fracture during the first clinical visit, select an effective anti-osteoporosis agent, and advise the patient to change his lifestyle and diet to prevent further bone loss. New agents include denosumab, a human monoclonal antibody that inhibits the RANK ligand (RANKL). RANKL promotes the formation, activity, and survival of osteoclasts and, thus, supports the breakdown of bone...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28228654/low-ft3-a-possible-marker-of-frailty-in-the-elderly
#12
Aldo Bertoli, Alessia Valentini, Maria Assunta Cianfarani, Elena Gasbarra, Umberto Tarantino, Massimo Federici
INTRODUCTION: Frailty is associated with a functional decline of multiple physiological systems, of which they may be a cause or consequence. The objective of the study was to evaluate the prevalence of thyroid hormone modifications in elderly frail subjects and its relationship with frailty. STUDY POPULATION AND METHODS: An observational study was carried out at the University Hospital "Tor Vergata" in Rome among ambulatory and hospitalized patients. The study population consisted of 112 elderly subjects: 62 were hospitalized following hip fracture and 50 control subjects were outpatients...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28227967/a-stimulation-driven-exoskeleton-for-walking-after-paraplegia
#13
Sarah R Chang, Mark J Nandor, Lu Li, Kevin M Foglyano, John R Schnellenberger, Rudi Kobetic, Roger D Quinn, Ronald J Triolo, Sarah R Chang, Mark J Nandor, Lu Li, Kevin M Foglyano, John R Schnellenberger, Rudi Kobetic, Roger D Quinn, Ronald J Triolo, Mark J Nandor, Rudi Kobetic, Roger D Quinn, John R Schnellenberger, Sarah R Chang, Kevin M Foglyano, Lu Li, Ronald J Triolo
An untethered version of a stimulation-driven exoskeleton was evaluated for its ability to restore walking after paralysis from spinal cord injury. The hybrid neuroprosthesis (HNP) combined a passive variable-constraint exoskeleton for stability and support with functional neuromuscular stimulation (FNS) to contract the paralyzed muscles to drive limb movement. This self-contained HNP was operated by an onboard controller that sampled sensor signals, generated appropriate commands to both the exoskeletal constraints and integrated stimulator, and transmitted data wirelessly via Bluetooth to an off-board computer for real-time monitoring and recording for offline analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227942/unified-phase-variables-of-relative-degree-two-for-human-locomotion
#14
Dario J Villarreal, Robert D Gregg, Dario J Villarreal, Robert D Gregg, Robert D Gregg, Dario J Villarreal
A starting point to achieve stable locomotion is synchronizing the leg joint kinematics during the gait cycle. Some biped robots parameterize a nonlinear controller (e.g., input-output feedback linearization) whose main objective is to track specific kinematic trajectories as a function of a single mechanical variable (i.e., a phase variable) in order to allow the robot to walk. A phase variable capable of parameterizing the entire gait cycle, the hip phase angle, has been used to control wearable robots and was recently shown to provide a robust representation of the phase of human gait...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227914/automated-classification-of-pathological-gait-after-stroke-using-ubiquitous-sensing-technology
#15
Elham Dolatabadi, Babak Taati, Alex Mihailidis, Elham Dolatabadi, Babak Taati, Alex Mihailidis, Babak Taati, Alex Mihailidis, Elham Dolatabadi
This study uses machine learning methods to distinguish between healthy and pathological gait. Examples of multi-dimensional pathological and normal gait sequences were collected from post-stroke and healthy individuals in a real clinical setting and with two Kinect sensors. The trajectories of rotational angle and global velocity of selected body joints (hips, spine, shoulders, neck, knees and ankles) over time formed the gait sequences. The combination of k nearest neighbor (kNN) and dynamic time warping (DTW) was used for classification...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227887/hip-joint-geometry-effects-on-cartilage-contact-stresses-during-a-gait-cycle
#16
Hui-Hui Wu, Dong Wang, An-Bang Ma, Dong-Yun Gu, Hui-Hui Wu, Dong Wang, An-Bang Ma, Dong-Yun Gu, An-Bang Ma, Dong-Yun Gu, Hui-Hui Wu, Dong Wang
The cartilage surface geometry of natural human hip joint is commonly regarded as sphere. It has been widely applied in computational simulation and hip joint prosthesis design. Some new geometry models have been developed and the sphere assumption has been questioned recently. The objective of this study was to analyze joint geometry effects on cartilage contact stress distribution and investigate contact patterns during a whole gait cycle. Hip surface was reconstructed from CT data of a healthy volunteer...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227883/development-and-validation-of-thums-version-5-with-1d-muscle-models-for-active-and-passive-automotive-safety-research
#17
Hideyuki Kimpara, Yuko Nakahira, Masami Iwamoto, Hideyuki Kimpara, Yuko Nakahira, Masami Iwamoto, Hideyuki Kimpara, Masami Iwamoto, Yuko Nakahira
Accurately predicting the occupant kinematics is critical to better understand the injury mechanisms during an automotive crash event. The objectives of this study were to develop and validate a finite element (FE) model of the human body integrated with an active muscle model called Total HUman Model for Safety (THUMS) version 5, which has the body size of the 50th percentile American adult male (AM50). This model is characterized by being able to generate a force owing to muscle tone and to predict the occupant response during an automotive crash event...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227828/pose-measurement-of-anterior-pelvic-plane-based-on-inertial-measurement-unit-in-total-hip-replacement-surgeries
#18
Zhe Cao, Shaojie Su, Hong Chen, Hao Tang, Yixin Zhou, Zhihua Wang, Zhe Cao, Shaojie Su, Hong Chen, Hao Tang, Yixin Zhou, Zhihua Wang, Zhe Cao, Yixin Zhou, Hong Chen, Zhihua Wang, Hao Tang, Shaojie Su
In Total Hip Replacement (THR), inaccurate measurement of Anterior Pelvic Plane (APP), which is usually used as a reference plane, will lead to malposition of the acetabular prosthesis. As a result, the risk of impingement, dislocation and wear will increase and the safe range of motion will be limited. In order to acquire the accurate pose of APP, a measurement system is designed in this paper, which includes two parts: one is used to estimate the initial pose of APP and the other is used to trail dynamic motion of APP...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227658/evaluating-the-deflection-of-dexterous-continuum-manipulators-with-unevenly-distributed-compliant-joints
#19
Anzhu Gao, Ryan J Murphy, Hao Liu, Iulian Iordachita, Mehran Armand, Anzhu Gao, Ryan J Murphy, Hao Liu, Iulian Iordachita, Mehran Armand, Hao Liu, Anzhu Gao, Iulian Iordachita, Mehran Armand, Ryan J Murphy
Dexterous continuum manipulators (DCMs) offer great potential for increasing instrument reach in minimally-invasive surgical procedures. We previously designed and fabricated a tendon driven DCM with a large instrument channel and evenly distributed compliant joints for minimally-invasive skull base surgery and the treatment of osteolysis during hip revision surgery. The evenly distributed compliant joints, in some cases, may limit the reach of the DCM during lesion removal. In this paper, we propose a finite element analysis (FEA) method for optimizing the distribution of the compliant joints based on treatment space requirements determined preoperatively...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227646/a-wearable-robotic-orthosis-with-a-spring-assist-actuator
#20
Seungmin Jung, Chankyu Kim, Jisu Park, Dongyoub Yu, Jaehwan Park, Junho Choi, Seungmin Jung, Chankyu Kim, Jisu Park, Dongyoub Yu, Jaehwan Park, Junho Choi, Dongyoub Yu, Jaehwan Park, Junho Choi, Seungmin Jung, Chankyu Kim, Jisu Park
This paper introduces a wearable robotic orthosis with spring-assist actuators, which is designed to assist people who have difficulty in walking. The spring-assist actuator consists of an electrical motor and a spring, which are attached to a rotational axis in parallel to each other. The spring-assist actuator is developed based on the analysis on the stiffness of the knee and hip joints during walking. "COWALK-Mobile," which is a wearable robotic orthosis, is developed using the spring-assist actuators to reduce the required motor torque during walking...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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